a mutation occurs that affects the process of mitosis. cells with this mutation get stuck in metaphase. which process is the gene that is mutated most likely to affect?

During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.

Explanation : Replication of DNA does not occur in mitosis. Replication of DNA occurs during S phase, an entirely different phase of cell division.

Explanation:

The first and longest phase of mitosis is prophase. During prophase, chromatin condenses into chromosomes, and the nuclear envelope (the membrane surrounding the nucleus) breaks down. In animal cells, the centrioles near the nucleus begin to separate and move to opposite poles of the cell.

Anaphase. The sister chromatids separate from one another and are pulled towards opposite poles of the cell. The microtubules that are not attached to chromosomes push the two poles of the spindle apart, while the kinetochore microtubules pull the chromosomes towards the poles.

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sorry, but you do not have posted the diagram.